1 /* 2 * f71805f.c - driver for the Fintek F71805F/FG Super-I/O chip integrated 3 * hardware monitoring features 4 * Copyright (C) 2005 Jean Delvare <khali@linux-fr.org> 5 * 6 * The F71805F/FG is a LPC Super-I/O chip made by Fintek. It integrates 7 * complete hardware monitoring features: voltage, fan and temperature 8 * sensors, and manual and automatic fan speed control. 9 * 10 * This program is free software; you can redistribute it and/or modify 11 * it under the terms of the GNU General Public License as published by 12 * the Free Software Foundation; either version 2 of the License, or 13 * (at your option) any later version. 14 * 15 * This program is distributed in the hope that it will be useful, 16 * but WITHOUT ANY WARRANTY; without even the implied warranty of 17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 18 * GNU General Public License for more details. 19 * 20 * You should have received a copy of the GNU General Public License 21 * along with this program; if not, write to the Free Software 22 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 23 */ 24 25 #include <linux/module.h> 26 #include <linux/init.h> 27 #include <linux/slab.h> 28 #include <linux/jiffies.h> 29 #include <linux/platform_device.h> 30 #include <linux/hwmon.h> 31 #include <linux/hwmon-sysfs.h> 32 #include <linux/err.h> 33 #include <linux/mutex.h> 34 #include <asm/io.h> 35 36 static struct platform_device *pdev; 37 38 #define DRVNAME "f71805f" 39 40 /* 41 * Super-I/O constants and functions 42 */ 43 44 #define F71805F_LD_HWM 0x04 45 46 #define SIO_REG_LDSEL 0x07 /* Logical device select */ 47 #define SIO_REG_DEVID 0x20 /* Device ID (2 bytes) */ 48 #define SIO_REG_DEVREV 0x22 /* Device revision */ 49 #define SIO_REG_MANID 0x23 /* Fintek ID (2 bytes) */ 50 #define SIO_REG_ENABLE 0x30 /* Logical device enable */ 51 #define SIO_REG_ADDR 0x60 /* Logical device address (2 bytes) */ 52 53 #define SIO_FINTEK_ID 0x1934 54 #define SIO_F71805F_ID 0x0406 55 56 static inline int 57 superio_inb(int base, int reg) 58 { 59 outb(reg, base); 60 return inb(base + 1); 61 } 62 63 static int 64 superio_inw(int base, int reg) 65 { 66 int val; 67 outb(reg++, base); 68 val = inb(base + 1) << 8; 69 outb(reg, base); 70 val |= inb(base + 1); 71 return val; 72 } 73 74 static inline void 75 superio_select(int base, int ld) 76 { 77 outb(SIO_REG_LDSEL, base); 78 outb(ld, base + 1); 79 } 80 81 static inline void 82 superio_enter(int base) 83 { 84 outb(0x87, base); 85 outb(0x87, base); 86 } 87 88 static inline void 89 superio_exit(int base) 90 { 91 outb(0xaa, base); 92 } 93 94 /* 95 * ISA constants 96 */ 97 98 #define REGION_LENGTH 2 99 #define ADDR_REG_OFFSET 0 100 #define DATA_REG_OFFSET 1 101 102 static struct resource f71805f_resource __initdata = { 103 .flags = IORESOURCE_IO, 104 }; 105 106 /* 107 * Registers 108 */ 109 110 /* in nr from 0 to 8 (8-bit values) */ 111 #define F71805F_REG_IN(nr) (0x10 + (nr)) 112 #define F71805F_REG_IN_HIGH(nr) (0x40 + 2 * (nr)) 113 #define F71805F_REG_IN_LOW(nr) (0x41 + 2 * (nr)) 114 /* fan nr from 0 to 2 (12-bit values, two registers) */ 115 #define F71805F_REG_FAN(nr) (0x20 + 2 * (nr)) 116 #define F71805F_REG_FAN_LOW(nr) (0x28 + 2 * (nr)) 117 #define F71805F_REG_FAN_CTRL(nr) (0x60 + 16 * (nr)) 118 /* temp nr from 0 to 2 (8-bit values) */ 119 #define F71805F_REG_TEMP(nr) (0x1B + (nr)) 120 #define F71805F_REG_TEMP_HIGH(nr) (0x54 + 2 * (nr)) 121 #define F71805F_REG_TEMP_HYST(nr) (0x55 + 2 * (nr)) 122 #define F71805F_REG_TEMP_MODE 0x01 123 124 #define F71805F_REG_START 0x00 125 /* status nr from 0 to 2 */ 126 #define F71805F_REG_STATUS(nr) (0x36 + (nr)) 127 128 /* 129 * Data structures and manipulation thereof 130 */ 131 132 struct f71805f_data { 133 unsigned short addr; 134 const char *name; 135 struct mutex lock; 136 struct class_device *class_dev; 137 138 struct mutex update_lock; 139 char valid; /* !=0 if following fields are valid */ 140 unsigned long last_updated; /* In jiffies */ 141 unsigned long last_limits; /* In jiffies */ 142 143 /* Register values */ 144 u8 in[9]; 145 u8 in_high[9]; 146 u8 in_low[9]; 147 u16 fan[3]; 148 u16 fan_low[3]; 149 u8 fan_enabled; /* Read once at init time */ 150 u8 temp[3]; 151 u8 temp_high[3]; 152 u8 temp_hyst[3]; 153 u8 temp_mode; 154 u8 alarms[3]; 155 }; 156 157 static inline long in_from_reg(u8 reg) 158 { 159 return (reg * 8); 160 } 161 162 /* The 2 least significant bits are not used */ 163 static inline u8 in_to_reg(long val) 164 { 165 if (val <= 0) 166 return 0; 167 if (val >= 2016) 168 return 0xfc; 169 return (((val + 16) / 32) << 2); 170 } 171 172 /* in0 is downscaled by a factor 2 internally */ 173 static inline long in0_from_reg(u8 reg) 174 { 175 return (reg * 16); 176 } 177 178 static inline u8 in0_to_reg(long val) 179 { 180 if (val <= 0) 181 return 0; 182 if (val >= 4032) 183 return 0xfc; 184 return (((val + 32) / 64) << 2); 185 } 186 187 /* The 4 most significant bits are not used */ 188 static inline long fan_from_reg(u16 reg) 189 { 190 reg &= 0xfff; 191 if (!reg || reg == 0xfff) 192 return 0; 193 return (1500000 / reg); 194 } 195 196 static inline u16 fan_to_reg(long rpm) 197 { 198 /* If the low limit is set below what the chip can measure, 199 store the largest possible 12-bit value in the registers, 200 so that no alarm will ever trigger. */ 201 if (rpm < 367) 202 return 0xfff; 203 return (1500000 / rpm); 204 } 205 206 static inline long temp_from_reg(u8 reg) 207 { 208 return (reg * 1000); 209 } 210 211 static inline u8 temp_to_reg(long val) 212 { 213 if (val < 0) 214 val = 0; 215 else if (val > 1000 * 0xff) 216 val = 0xff; 217 return ((val + 500) / 1000); 218 } 219 220 /* 221 * Device I/O access 222 */ 223 224 static u8 f71805f_read8(struct f71805f_data *data, u8 reg) 225 { 226 u8 val; 227 228 mutex_lock(&data->lock); 229 outb(reg, data->addr + ADDR_REG_OFFSET); 230 val = inb(data->addr + DATA_REG_OFFSET); 231 mutex_unlock(&data->lock); 232 233 return val; 234 } 235 236 static void f71805f_write8(struct f71805f_data *data, u8 reg, u8 val) 237 { 238 mutex_lock(&data->lock); 239 outb(reg, data->addr + ADDR_REG_OFFSET); 240 outb(val, data->addr + DATA_REG_OFFSET); 241 mutex_unlock(&data->lock); 242 } 243 244 /* It is important to read the MSB first, because doing so latches the 245 value of the LSB, so we are sure both bytes belong to the same value. */ 246 static u16 f71805f_read16(struct f71805f_data *data, u8 reg) 247 { 248 u16 val; 249 250 mutex_lock(&data->lock); 251 outb(reg, data->addr + ADDR_REG_OFFSET); 252 val = inb(data->addr + DATA_REG_OFFSET) << 8; 253 outb(++reg, data->addr + ADDR_REG_OFFSET); 254 val |= inb(data->addr + DATA_REG_OFFSET); 255 mutex_unlock(&data->lock); 256 257 return val; 258 } 259 260 static void f71805f_write16(struct f71805f_data *data, u8 reg, u16 val) 261 { 262 mutex_lock(&data->lock); 263 outb(reg, data->addr + ADDR_REG_OFFSET); 264 outb(val >> 8, data->addr + DATA_REG_OFFSET); 265 outb(++reg, data->addr + ADDR_REG_OFFSET); 266 outb(val & 0xff, data->addr + DATA_REG_OFFSET); 267 mutex_unlock(&data->lock); 268 } 269 270 static struct f71805f_data *f71805f_update_device(struct device *dev) 271 { 272 struct f71805f_data *data = dev_get_drvdata(dev); 273 int nr; 274 275 mutex_lock(&data->update_lock); 276 277 /* Limit registers cache is refreshed after 60 seconds */ 278 if (time_after(jiffies, data->last_updated + 60 * HZ) 279 || !data->valid) { 280 for (nr = 0; nr < 9; nr++) { 281 data->in_high[nr] = f71805f_read8(data, 282 F71805F_REG_IN_HIGH(nr)); 283 data->in_low[nr] = f71805f_read8(data, 284 F71805F_REG_IN_LOW(nr)); 285 } 286 for (nr = 0; nr < 3; nr++) { 287 if (data->fan_enabled & (1 << nr)) 288 data->fan_low[nr] = f71805f_read16(data, 289 F71805F_REG_FAN_LOW(nr)); 290 } 291 for (nr = 0; nr < 3; nr++) { 292 data->temp_high[nr] = f71805f_read8(data, 293 F71805F_REG_TEMP_HIGH(nr)); 294 data->temp_hyst[nr] = f71805f_read8(data, 295 F71805F_REG_TEMP_HYST(nr)); 296 } 297 data->temp_mode = f71805f_read8(data, F71805F_REG_TEMP_MODE); 298 299 data->last_limits = jiffies; 300 } 301 302 /* Measurement registers cache is refreshed after 1 second */ 303 if (time_after(jiffies, data->last_updated + HZ) 304 || !data->valid) { 305 for (nr = 0; nr < 9; nr++) { 306 data->in[nr] = f71805f_read8(data, 307 F71805F_REG_IN(nr)); 308 } 309 for (nr = 0; nr < 3; nr++) { 310 if (data->fan_enabled & (1 << nr)) 311 data->fan[nr] = f71805f_read16(data, 312 F71805F_REG_FAN(nr)); 313 } 314 for (nr = 0; nr < 3; nr++) { 315 data->temp[nr] = f71805f_read8(data, 316 F71805F_REG_TEMP(nr)); 317 } 318 for (nr = 0; nr < 3; nr++) { 319 data->alarms[nr] = f71805f_read8(data, 320 F71805F_REG_STATUS(nr)); 321 } 322 323 data->last_updated = jiffies; 324 data->valid = 1; 325 } 326 327 mutex_unlock(&data->update_lock); 328 329 return data; 330 } 331 332 /* 333 * Sysfs interface 334 */ 335 336 static ssize_t show_in0(struct device *dev, struct device_attribute *devattr, 337 char *buf) 338 { 339 struct f71805f_data *data = f71805f_update_device(dev); 340 341 return sprintf(buf, "%ld\n", in0_from_reg(data->in[0])); 342 } 343 344 static ssize_t show_in0_max(struct device *dev, struct device_attribute 345 *devattr, char *buf) 346 { 347 struct f71805f_data *data = f71805f_update_device(dev); 348 349 return sprintf(buf, "%ld\n", in0_from_reg(data->in_high[0])); 350 } 351 352 static ssize_t show_in0_min(struct device *dev, struct device_attribute 353 *devattr, char *buf) 354 { 355 struct f71805f_data *data = f71805f_update_device(dev); 356 357 return sprintf(buf, "%ld\n", in0_from_reg(data->in_low[0])); 358 } 359 360 static ssize_t set_in0_max(struct device *dev, struct device_attribute 361 *devattr, const char *buf, size_t count) 362 { 363 struct f71805f_data *data = dev_get_drvdata(dev); 364 long val = simple_strtol(buf, NULL, 10); 365 366 mutex_lock(&data->update_lock); 367 data->in_high[0] = in0_to_reg(val); 368 f71805f_write8(data, F71805F_REG_IN_HIGH(0), data->in_high[0]); 369 mutex_unlock(&data->update_lock); 370 371 return count; 372 } 373 374 static ssize_t set_in0_min(struct device *dev, struct device_attribute 375 *devattr, const char *buf, size_t count) 376 { 377 struct f71805f_data *data = dev_get_drvdata(dev); 378 long val = simple_strtol(buf, NULL, 10); 379 380 mutex_lock(&data->update_lock); 381 data->in_low[0] = in0_to_reg(val); 382 f71805f_write8(data, F71805F_REG_IN_LOW(0), data->in_low[0]); 383 mutex_unlock(&data->update_lock); 384 385 return count; 386 } 387 388 static ssize_t show_in(struct device *dev, struct device_attribute *devattr, 389 char *buf) 390 { 391 struct f71805f_data *data = f71805f_update_device(dev); 392 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); 393 int nr = attr->index; 394 395 return sprintf(buf, "%ld\n", in_from_reg(data->in[nr])); 396 } 397 398 static ssize_t show_in_max(struct device *dev, struct device_attribute 399 *devattr, char *buf) 400 { 401 struct f71805f_data *data = f71805f_update_device(dev); 402 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); 403 int nr = attr->index; 404 405 return sprintf(buf, "%ld\n", in_from_reg(data->in_high[nr])); 406 } 407 408 static ssize_t show_in_min(struct device *dev, struct device_attribute 409 *devattr, char *buf) 410 { 411 struct f71805f_data *data = f71805f_update_device(dev); 412 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); 413 int nr = attr->index; 414 415 return sprintf(buf, "%ld\n", in_from_reg(data->in_low[nr])); 416 } 417 418 static ssize_t set_in_max(struct device *dev, struct device_attribute 419 *devattr, const char *buf, size_t count) 420 { 421 struct f71805f_data *data = dev_get_drvdata(dev); 422 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); 423 int nr = attr->index; 424 long val = simple_strtol(buf, NULL, 10); 425 426 mutex_lock(&data->update_lock); 427 data->in_high[nr] = in_to_reg(val); 428 f71805f_write8(data, F71805F_REG_IN_HIGH(nr), data->in_high[nr]); 429 mutex_unlock(&data->update_lock); 430 431 return count; 432 } 433 434 static ssize_t set_in_min(struct device *dev, struct device_attribute 435 *devattr, const char *buf, size_t count) 436 { 437 struct f71805f_data *data = dev_get_drvdata(dev); 438 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); 439 int nr = attr->index; 440 long val = simple_strtol(buf, NULL, 10); 441 442 mutex_lock(&data->update_lock); 443 data->in_low[nr] = in_to_reg(val); 444 f71805f_write8(data, F71805F_REG_IN_LOW(nr), data->in_low[nr]); 445 mutex_unlock(&data->update_lock); 446 447 return count; 448 } 449 450 static ssize_t show_fan(struct device *dev, struct device_attribute *devattr, 451 char *buf) 452 { 453 struct f71805f_data *data = f71805f_update_device(dev); 454 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); 455 int nr = attr->index; 456 457 return sprintf(buf, "%ld\n", fan_from_reg(data->fan[nr])); 458 } 459 460 static ssize_t show_fan_min(struct device *dev, struct device_attribute 461 *devattr, char *buf) 462 { 463 struct f71805f_data *data = f71805f_update_device(dev); 464 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); 465 int nr = attr->index; 466 467 return sprintf(buf, "%ld\n", fan_from_reg(data->fan_low[nr])); 468 } 469 470 static ssize_t set_fan_min(struct device *dev, struct device_attribute 471 *devattr, const char *buf, size_t count) 472 { 473 struct f71805f_data *data = dev_get_drvdata(dev); 474 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); 475 int nr = attr->index; 476 long val = simple_strtol(buf, NULL, 10); 477 478 mutex_lock(&data->update_lock); 479 data->fan_low[nr] = fan_to_reg(val); 480 f71805f_write16(data, F71805F_REG_FAN_LOW(nr), data->fan_low[nr]); 481 mutex_unlock(&data->update_lock); 482 483 return count; 484 } 485 486 static ssize_t show_temp(struct device *dev, struct device_attribute *devattr, 487 char *buf) 488 { 489 struct f71805f_data *data = f71805f_update_device(dev); 490 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); 491 int nr = attr->index; 492 493 return sprintf(buf, "%ld\n", temp_from_reg(data->temp[nr])); 494 } 495 496 static ssize_t show_temp_max(struct device *dev, struct device_attribute 497 *devattr, char *buf) 498 { 499 struct f71805f_data *data = f71805f_update_device(dev); 500 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); 501 int nr = attr->index; 502 503 return sprintf(buf, "%ld\n", temp_from_reg(data->temp_high[nr])); 504 } 505 506 static ssize_t show_temp_hyst(struct device *dev, struct device_attribute 507 *devattr, char *buf) 508 { 509 struct f71805f_data *data = f71805f_update_device(dev); 510 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); 511 int nr = attr->index; 512 513 return sprintf(buf, "%ld\n", temp_from_reg(data->temp_hyst[nr])); 514 } 515 516 static ssize_t show_temp_type(struct device *dev, struct device_attribute 517 *devattr, char *buf) 518 { 519 struct f71805f_data *data = f71805f_update_device(dev); 520 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); 521 int nr = attr->index; 522 523 /* 3 is diode, 4 is thermistor */ 524 return sprintf(buf, "%u\n", (data->temp_mode & (1 << nr)) ? 3 : 4); 525 } 526 527 static ssize_t set_temp_max(struct device *dev, struct device_attribute 528 *devattr, const char *buf, size_t count) 529 { 530 struct f71805f_data *data = dev_get_drvdata(dev); 531 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); 532 int nr = attr->index; 533 long val = simple_strtol(buf, NULL, 10); 534 535 mutex_lock(&data->update_lock); 536 data->temp_high[nr] = temp_to_reg(val); 537 f71805f_write8(data, F71805F_REG_TEMP_HIGH(nr), data->temp_high[nr]); 538 mutex_unlock(&data->update_lock); 539 540 return count; 541 } 542 543 static ssize_t set_temp_hyst(struct device *dev, struct device_attribute 544 *devattr, const char *buf, size_t count) 545 { 546 struct f71805f_data *data = dev_get_drvdata(dev); 547 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); 548 int nr = attr->index; 549 long val = simple_strtol(buf, NULL, 10); 550 551 mutex_lock(&data->update_lock); 552 data->temp_hyst[nr] = temp_to_reg(val); 553 f71805f_write8(data, F71805F_REG_TEMP_HYST(nr), data->temp_hyst[nr]); 554 mutex_unlock(&data->update_lock); 555 556 return count; 557 } 558 559 static ssize_t show_alarms_in(struct device *dev, struct device_attribute 560 *devattr, char *buf) 561 { 562 struct f71805f_data *data = f71805f_update_device(dev); 563 564 return sprintf(buf, "%d\n", data->alarms[0] | 565 ((data->alarms[1] & 0x01) << 8)); 566 } 567 568 static ssize_t show_alarms_fan(struct device *dev, struct device_attribute 569 *devattr, char *buf) 570 { 571 struct f71805f_data *data = f71805f_update_device(dev); 572 573 return sprintf(buf, "%d\n", data->alarms[2] & 0x07); 574 } 575 576 static ssize_t show_alarms_temp(struct device *dev, struct device_attribute 577 *devattr, char *buf) 578 { 579 struct f71805f_data *data = f71805f_update_device(dev); 580 581 return sprintf(buf, "%d\n", (data->alarms[1] >> 3) & 0x07); 582 } 583 584 static ssize_t show_name(struct device *dev, struct device_attribute 585 *devattr, char *buf) 586 { 587 struct f71805f_data *data = dev_get_drvdata(dev); 588 589 return sprintf(buf, "%s\n", data->name); 590 } 591 592 static struct device_attribute f71805f_dev_attr[] = { 593 __ATTR(in0_input, S_IRUGO, show_in0, NULL), 594 __ATTR(in0_max, S_IRUGO| S_IWUSR, show_in0_max, set_in0_max), 595 __ATTR(in0_min, S_IRUGO| S_IWUSR, show_in0_min, set_in0_min), 596 __ATTR(alarms_in, S_IRUGO, show_alarms_in, NULL), 597 __ATTR(alarms_fan, S_IRUGO, show_alarms_fan, NULL), 598 __ATTR(alarms_temp, S_IRUGO, show_alarms_temp, NULL), 599 __ATTR(name, S_IRUGO, show_name, NULL), 600 }; 601 602 static struct sensor_device_attribute f71805f_sensor_attr[] = { 603 SENSOR_ATTR(in1_input, S_IRUGO, show_in, NULL, 1), 604 SENSOR_ATTR(in1_max, S_IRUGO | S_IWUSR, 605 show_in_max, set_in_max, 1), 606 SENSOR_ATTR(in1_min, S_IRUGO | S_IWUSR, 607 show_in_min, set_in_min, 1), 608 SENSOR_ATTR(in2_input, S_IRUGO, show_in, NULL, 2), 609 SENSOR_ATTR(in2_max, S_IRUGO | S_IWUSR, 610 show_in_max, set_in_max, 2), 611 SENSOR_ATTR(in2_min, S_IRUGO | S_IWUSR, 612 show_in_min, set_in_min, 2), 613 SENSOR_ATTR(in3_input, S_IRUGO, show_in, NULL, 3), 614 SENSOR_ATTR(in3_max, S_IRUGO | S_IWUSR, 615 show_in_max, set_in_max, 3), 616 SENSOR_ATTR(in3_min, S_IRUGO | S_IWUSR, 617 show_in_min, set_in_min, 3), 618 SENSOR_ATTR(in4_input, S_IRUGO, show_in, NULL, 4), 619 SENSOR_ATTR(in4_max, S_IRUGO | S_IWUSR, 620 show_in_max, set_in_max, 4), 621 SENSOR_ATTR(in4_min, S_IRUGO | S_IWUSR, 622 show_in_min, set_in_min, 4), 623 SENSOR_ATTR(in5_input, S_IRUGO, show_in, NULL, 5), 624 SENSOR_ATTR(in5_max, S_IRUGO | S_IWUSR, 625 show_in_max, set_in_max, 5), 626 SENSOR_ATTR(in5_min, S_IRUGO | S_IWUSR, 627 show_in_min, set_in_min, 5), 628 SENSOR_ATTR(in6_input, S_IRUGO, show_in, NULL, 6), 629 SENSOR_ATTR(in6_max, S_IRUGO | S_IWUSR, 630 show_in_max, set_in_max, 6), 631 SENSOR_ATTR(in6_min, S_IRUGO | S_IWUSR, 632 show_in_min, set_in_min, 6), 633 SENSOR_ATTR(in7_input, S_IRUGO, show_in, NULL, 7), 634 SENSOR_ATTR(in7_max, S_IRUGO | S_IWUSR, 635 show_in_max, set_in_max, 7), 636 SENSOR_ATTR(in7_min, S_IRUGO | S_IWUSR, 637 show_in_min, set_in_min, 7), 638 SENSOR_ATTR(in8_input, S_IRUGO, show_in, NULL, 8), 639 SENSOR_ATTR(in8_max, S_IRUGO | S_IWUSR, 640 show_in_max, set_in_max, 8), 641 SENSOR_ATTR(in8_min, S_IRUGO | S_IWUSR, 642 show_in_min, set_in_min, 8), 643 644 SENSOR_ATTR(temp1_input, S_IRUGO, show_temp, NULL, 0), 645 SENSOR_ATTR(temp1_max, S_IRUGO | S_IWUSR, 646 show_temp_max, set_temp_max, 0), 647 SENSOR_ATTR(temp1_max_hyst, S_IRUGO | S_IWUSR, 648 show_temp_hyst, set_temp_hyst, 0), 649 SENSOR_ATTR(temp1_type, S_IRUGO, show_temp_type, NULL, 0), 650 SENSOR_ATTR(temp2_input, S_IRUGO, show_temp, NULL, 1), 651 SENSOR_ATTR(temp2_max, S_IRUGO | S_IWUSR, 652 show_temp_max, set_temp_max, 1), 653 SENSOR_ATTR(temp2_max_hyst, S_IRUGO | S_IWUSR, 654 show_temp_hyst, set_temp_hyst, 1), 655 SENSOR_ATTR(temp2_type, S_IRUGO, show_temp_type, NULL, 1), 656 SENSOR_ATTR(temp3_input, S_IRUGO, show_temp, NULL, 2), 657 SENSOR_ATTR(temp3_max, S_IRUGO | S_IWUSR, 658 show_temp_max, set_temp_max, 2), 659 SENSOR_ATTR(temp3_max_hyst, S_IRUGO | S_IWUSR, 660 show_temp_hyst, set_temp_hyst, 2), 661 SENSOR_ATTR(temp3_type, S_IRUGO, show_temp_type, NULL, 2), 662 }; 663 664 static struct sensor_device_attribute f71805f_fan_attr[] = { 665 SENSOR_ATTR(fan1_input, S_IRUGO, show_fan, NULL, 0), 666 SENSOR_ATTR(fan1_min, S_IRUGO | S_IWUSR, 667 show_fan_min, set_fan_min, 0), 668 SENSOR_ATTR(fan2_input, S_IRUGO, show_fan, NULL, 1), 669 SENSOR_ATTR(fan2_min, S_IRUGO | S_IWUSR, 670 show_fan_min, set_fan_min, 1), 671 SENSOR_ATTR(fan3_input, S_IRUGO, show_fan, NULL, 2), 672 SENSOR_ATTR(fan3_min, S_IRUGO | S_IWUSR, 673 show_fan_min, set_fan_min, 2), 674 }; 675 676 /* 677 * Device registration and initialization 678 */ 679 680 static void __devinit f71805f_init_device(struct f71805f_data *data) 681 { 682 u8 reg; 683 int i; 684 685 reg = f71805f_read8(data, F71805F_REG_START); 686 if ((reg & 0x41) != 0x01) { 687 printk(KERN_DEBUG DRVNAME ": Starting monitoring " 688 "operations\n"); 689 f71805f_write8(data, F71805F_REG_START, (reg | 0x01) & ~0x40); 690 } 691 692 /* Fan monitoring can be disabled. If it is, we won't be polling 693 the register values, and won't create the related sysfs files. */ 694 for (i = 0; i < 3; i++) { 695 reg = f71805f_read8(data, F71805F_REG_FAN_CTRL(i)); 696 if (!(reg & 0x80)) 697 data->fan_enabled |= (1 << i); 698 } 699 } 700 701 static int __devinit f71805f_probe(struct platform_device *pdev) 702 { 703 struct f71805f_data *data; 704 struct resource *res; 705 int i, err; 706 707 if (!(data = kzalloc(sizeof(struct f71805f_data), GFP_KERNEL))) { 708 err = -ENOMEM; 709 printk(KERN_ERR DRVNAME ": Out of memory\n"); 710 goto exit; 711 } 712 713 res = platform_get_resource(pdev, IORESOURCE_IO, 0); 714 data->addr = res->start; 715 mutex_init(&data->lock); 716 data->name = "f71805f"; 717 mutex_init(&data->update_lock); 718 719 platform_set_drvdata(pdev, data); 720 721 data->class_dev = hwmon_device_register(&pdev->dev); 722 if (IS_ERR(data->class_dev)) { 723 err = PTR_ERR(data->class_dev); 724 dev_err(&pdev->dev, "Class registration failed (%d)\n", err); 725 goto exit_free; 726 } 727 728 /* Initialize the F71805F chip */ 729 f71805f_init_device(data); 730 731 /* Register sysfs interface files */ 732 for (i = 0; i < ARRAY_SIZE(f71805f_dev_attr); i++) { 733 err = device_create_file(&pdev->dev, &f71805f_dev_attr[i]); 734 if (err) 735 goto exit_class; 736 } 737 for (i = 0; i < ARRAY_SIZE(f71805f_sensor_attr); i++) { 738 err = device_create_file(&pdev->dev, 739 &f71805f_sensor_attr[i].dev_attr); 740 if (err) 741 goto exit_class; 742 } 743 for (i = 0; i < ARRAY_SIZE(f71805f_fan_attr); i++) { 744 if (!(data->fan_enabled & (1 << (i / 2)))) 745 continue; 746 err = device_create_file(&pdev->dev, 747 &f71805f_fan_attr[i].dev_attr); 748 if (err) 749 goto exit_class; 750 } 751 752 return 0; 753 754 exit_class: 755 dev_err(&pdev->dev, "Sysfs interface creation failed\n"); 756 hwmon_device_unregister(data->class_dev); 757 exit_free: 758 kfree(data); 759 exit: 760 return err; 761 } 762 763 static int __devexit f71805f_remove(struct platform_device *pdev) 764 { 765 struct f71805f_data *data = platform_get_drvdata(pdev); 766 767 platform_set_drvdata(pdev, NULL); 768 hwmon_device_unregister(data->class_dev); 769 kfree(data); 770 771 return 0; 772 } 773 774 static struct platform_driver f71805f_driver = { 775 .driver = { 776 .owner = THIS_MODULE, 777 .name = DRVNAME, 778 }, 779 .probe = f71805f_probe, 780 .remove = __devexit_p(f71805f_remove), 781 }; 782 783 static int __init f71805f_device_add(unsigned short address) 784 { 785 int err; 786 787 pdev = platform_device_alloc(DRVNAME, address); 788 if (!pdev) { 789 err = -ENOMEM; 790 printk(KERN_ERR DRVNAME ": Device allocation failed\n"); 791 goto exit; 792 } 793 794 f71805f_resource.start = address; 795 f71805f_resource.end = address + REGION_LENGTH - 1; 796 f71805f_resource.name = pdev->name; 797 err = platform_device_add_resources(pdev, &f71805f_resource, 1); 798 if (err) { 799 printk(KERN_ERR DRVNAME ": Device resource addition failed " 800 "(%d)\n", err); 801 goto exit_device_put; 802 } 803 804 err = platform_device_add(pdev); 805 if (err) { 806 printk(KERN_ERR DRVNAME ": Device addition failed (%d)\n", 807 err); 808 goto exit_device_put; 809 } 810 811 return 0; 812 813 exit_device_put: 814 platform_device_put(pdev); 815 exit: 816 return err; 817 } 818 819 static int __init f71805f_find(int sioaddr, unsigned short *address) 820 { 821 int err = -ENODEV; 822 u16 devid; 823 824 superio_enter(sioaddr); 825 826 devid = superio_inw(sioaddr, SIO_REG_MANID); 827 if (devid != SIO_FINTEK_ID) 828 goto exit; 829 830 devid = superio_inw(sioaddr, SIO_REG_DEVID); 831 if (devid != SIO_F71805F_ID) { 832 printk(KERN_INFO DRVNAME ": Unsupported Fintek device, " 833 "skipping\n"); 834 goto exit; 835 } 836 837 superio_select(sioaddr, F71805F_LD_HWM); 838 if (!(superio_inb(sioaddr, SIO_REG_ENABLE) & 0x01)) { 839 printk(KERN_WARNING DRVNAME ": Device not activated, " 840 "skipping\n"); 841 goto exit; 842 } 843 844 *address = superio_inw(sioaddr, SIO_REG_ADDR); 845 if (*address == 0) { 846 printk(KERN_WARNING DRVNAME ": Base address not set, " 847 "skipping\n"); 848 goto exit; 849 } 850 851 err = 0; 852 printk(KERN_INFO DRVNAME ": Found F71805F chip at %#x, revision %u\n", 853 *address, superio_inb(sioaddr, SIO_REG_DEVREV)); 854 855 exit: 856 superio_exit(sioaddr); 857 return err; 858 } 859 860 static int __init f71805f_init(void) 861 { 862 int err; 863 unsigned short address; 864 865 if (f71805f_find(0x2e, &address) 866 && f71805f_find(0x4e, &address)) 867 return -ENODEV; 868 869 err = platform_driver_register(&f71805f_driver); 870 if (err) 871 goto exit; 872 873 /* Sets global pdev as a side effect */ 874 err = f71805f_device_add(address); 875 if (err) 876 goto exit_driver; 877 878 return 0; 879 880 exit_driver: 881 platform_driver_unregister(&f71805f_driver); 882 exit: 883 return err; 884 } 885 886 static void __exit f71805f_exit(void) 887 { 888 platform_device_unregister(pdev); 889 platform_driver_unregister(&f71805f_driver); 890 } 891 892 MODULE_AUTHOR("Jean Delvare <khali@linux-fr>"); 893 MODULE_LICENSE("GPL"); 894 MODULE_DESCRIPTION("F71805F hardware monitoring driver"); 895 896 module_init(f71805f_init); 897 module_exit(f71805f_exit); 898